3869917 has 2 divisors, whose sum is σ = 3869918. Its totient is φ = 3869916.

The previous prime is 3869881. The next prime is 3869959. The reversal of 3869917 is 7199683.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3865156 + 4761 = 1966^2 + 69^2 .

It is an emirp because it is prime and its reverse (7199683) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3869917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3869417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1934958 + 1934959.

It is an arithmetic number, because the mean of its divisors is an integer number (1934959).

Almost surely, 2^3869917 is an apocalyptic number.

It is an amenable number.

3869917 is a deficient number, since it is larger than the sum of its proper divisors (1).

3869917 is an equidigital number, since it uses as much as digits as its factorization.

3869917 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 81648, while the sum is 43.

The square root of 3869917 is about 1967.2104615419. The cubic root of 3869917 is about 157.0003245561. Note that the first 3 decimals are identical.

The spelling of 3869917 in words is "three million, eight hundred sixty-nine thousand, nine hundred seventeen".